--- old/src/hotspot/os_cpu/aix_ppc/atomic_aix_ppc.hpp	2019-11-21 11:56:47.698600850 +0100
+++ new/src/hotspot/os_cpu/aix_ppc/atomic_aix_ppc.hpp	2019-11-21 11:56:47.198592402 +0100
@@ -96,13 +96,13 @@
 struct Atomic::PlatformAdd
   : Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> >
 {
-  template<typename I, typename D>
-  D add_and_fetch(I add_value, D volatile* dest, atomic_memory_order order) const;
+  template<typename D, typename I>
+  D add_and_fetch(D volatile* dest, I add_value, atomic_memory_order order) const;
 };
 
 template<>
-template<typename I, typename D>
-inline D Atomic::PlatformAdd<4>::add_and_fetch(I add_value, D volatile* dest,
+template<typename D, typename I>
+inline D Atomic::PlatformAdd<4>::add_and_fetch(D volatile* dest, I add_value,
                                                atomic_memory_order order) const {
   STATIC_ASSERT(4 == sizeof(I));
   STATIC_ASSERT(4 == sizeof(D));
@@ -127,8 +127,8 @@
 
 
 template<>
-template<typename I, typename D>
-inline D Atomic::PlatformAdd<8>::add_and_fetch(I add_value, D volatile* dest,
+template<typename D, typename I>
+inline D Atomic::PlatformAdd<8>::add_and_fetch(D volatile* dest, I add_value,
                                                atomic_memory_order order) const {
   STATIC_ASSERT(8 == sizeof(I));
   STATIC_ASSERT(8 == sizeof(D));
@@ -153,8 +153,8 @@
 
 template<>
 template<typename T>
-inline T Atomic::PlatformXchg<4>::operator()(T exchange_value,
-                                             T volatile* dest,
+inline T Atomic::PlatformXchg<4>::operator()(T volatile* dest,
+                                             T exchange_value,
                                              atomic_memory_order order) const {
   // Note that xchg doesn't necessarily do an acquire
   // (see synchronizer.cpp).
@@ -192,8 +192,8 @@
 
 template<>
 template<typename T>
-inline T Atomic::PlatformXchg<8>::operator()(T exchange_value,
-                                             T volatile* dest,
+inline T Atomic::PlatformXchg<8>::operator()(T volatile* dest,
+                                             T exchange_value,
                                              atomic_memory_order order) const {
   STATIC_ASSERT(8 == sizeof(T));
   // Note that xchg doesn't necessarily do an acquire
@@ -232,9 +232,9 @@
 
 template<>
 template<typename T>
-inline T Atomic::PlatformCmpxchg<1>::operator()(T exchange_value,
-                                                T volatile* dest,
+inline T Atomic::PlatformCmpxchg<1>::operator()(T volatile* dest,
                                                 T compare_value,
+                                                T exchange_value,
                                                 atomic_memory_order order) const {
   STATIC_ASSERT(1 == sizeof(T));
 
@@ -302,9 +302,9 @@
 
 template<>
 template<typename T>
-inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
-                                                T volatile* dest,
+inline T Atomic::PlatformCmpxchg<4>::operator()(T volatile* dest,
                                                 T compare_value,
+                                                T exchange_value,
                                                 atomic_memory_order order) const {
   STATIC_ASSERT(4 == sizeof(T));
 
@@ -352,9 +352,9 @@
 
 template<>
 template<typename T>
-inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
-                                                T volatile* dest,
+inline T Atomic::PlatformCmpxchg<8>::operator()(T volatile* dest,
                                                 T compare_value,
+                                                T exchange_value,
                                                 atomic_memory_order order) const {
   STATIC_ASSERT(8 == sizeof(T));